This graph charts history beautifully and is a great reminder of just how dominant Windows was in the 1990s and early 2000s. It’s also a reminder that Apple’s position isn’t as strong as it sometimes appears.

The other story of this era that isn’t shown on the chart is the explosion of unit sales, first from growth in PC and more recently from growth in mobile. PCs were shipping c10m units per quarter in the mid 1990s, peaking at around 100m per quarter five years ago before falling to c60m last quarter. Meanwhile iOS and Android have grown from nothing in 2007 to c400m per quarter. Overall that’s a 46x growth in the number of computers sold per quarter since 1995. And the computers have got a lot more powerful too.